2043442319977 has 2 divisors, whose sum is σ = 2043442319978. Its totient is φ = 2043442319976.

The previous prime is 2043442319951. The next prime is 2043442320053. The reversal of 2043442319977 is 7799132443402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1667806942096 + 375635377881 = 1291436^2 + 612891^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043442319977 - 2²³ = 2043433931369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2043442319377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021721159988 + 1021721159989.

It is an arithmetic number, because the mean of its divisors is an integer number (1021721159989).

Almost surely, 2^{2043442319977} is an apocalyptic number.

It is an amenable number.

2043442319977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043442319977 is an equidigital number, since it uses as much as digits as its factorization.

2043442319977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 2043442319977 in words is "two trillion, forty-three billion, four hundred forty-two million, three hundred nineteen thousand, nine hundred seventy-seven".